Fatal error: Uncaught Error: Class "Drupal\datetime\Plugin\views\argument\Date" not found in /home/www/drupal8/test/core/modules/datetime/src/Plugin/views/argument/WeekDate.php:10
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/datetime/src/Plugin/views/argument/WeekDate.php on line 10